Siemens Building Technology 599-03170 Valve

The Siemens Building Technology 599-03170 Valve is a rugged, 2-inch normally open globe valve designed for demanding hydronic and steam applications. As the direct replacement for the legacy DG2-2-40, this Flowrite 599 series valve body features a heavy-duty bronze body and reliable brass trim, optimized for high-performance flow control. With an equal percentage flow characteristic and a 40 Cv rating, it ensures precise modulation and stable loop control in commercial HVACR systems. The unit is built to ANSI Class 250 standards, supporting medium temperatures from 20°F to 250°F, making it suitable for chilled water, hot water, and saturated steam. Its direct-coupled universal bonnet allows for seamless integration with pneumatic or electronic actuators, including the SFA/P and SSA/P series, without requiring specialized tools for field installation. The NPT threaded connections and Class IV leakage rating (0.01% of Cv) provide a secure, tight-sealing solution for high-pressure 2-way configurations.

• Direct Retrofit: Engineered as the standard 599-03170 replacement for the DG2-2-40, ensuring zero-footprint transition in existing piping.
• High Rangeability: Features a rangeability of >100:1 for superior low-load control and system efficiency.
• Durable Construction: The UNS CA 844 bronze body and stainless steel stem resist corrosion in varied water chemistries.
• Field Serviceable: Cartridge-type packing allows for efficient maintenance without removing the valve from the line.

• Is this valve compatible with pneumatic actuators? Yes, the universal bonnet design accepts standard 3/4-inch stroke Flowrite pneumatic or electronic actuators.
• Can this be used for steam service? This model is rated for saturated steam up to 15 psi and water applications up to 250°F.
• What is the fail-safe position? This is a normally open valve, meaning the flow path is open when the actuator is de-energized or retracted.

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.